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Pengaruh Pupuk Hayati Mikoriza Terhadap Pertumbuhan dan Hasil Tanaman Tomat (Solanum lycopersicum) dengan Rancangan Acak Lengkap Septia Cahaya Sari Sipayung; Thanaya Lovry Lastiar; Trinita Melyana Hutagalung; Widya Narti Lubis; Putri Maulidina Fadilah
Jurnal Arjuna : Publikasi Ilmu Pendidikan, Bahasa dan Matematika Vol. 2 No. 6 (2024): Desember : Jurnal Arjuna : Publikasi Ilmu Pendidikan, Bahasa dan Matematika
Publisher : Asosiasi Riset Ilmu Pendidikan Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61132/arjuna.v2i6.1323

Abstract

This study aims to analyze the effect of mycorrhizal biofertilizer on the growth of tomato plants (Solanum lycopersicum) height over a period of 8 weeks. A Completely Randomized Design (CRD) was employed with six treatments: no mycorrhiza (Mo), low doses (M0.1), and high doses (M1, M1.1, M2, M2.1) with variations of 5 grams and 10 grams. The results showed that the application of mycorrhiza at higher doses resulted in significant growth compared to the control treatment. By week 8, plants receiving treatments M2 and M2.1 reached an average height of 32 cm and 32.5 cm, while the control treatment without mycorrhiza only reached 9 cm. Variance analysis (ANOVA) indicated significant differences at the 95% confidence level among treatments. Therefore, the use of mycorrhizal biofertilizer has been proven effective in enhancing the height growth of tomato plants, which is expected to increase productivity in horticultural cultivation.
Modifikasi Persamaan Diferensial Biasa dengan Metode Runge Kutta Orde Lima Fikri Agustin; Tiara Febriyanti Br Panjaitan; Yasmin Khairunisa; Putri Maulidina Fadilah
Katalis Pendidikan : Jurnal Ilmu Pendidikan dan Matematika Vol. 1 No. 4 (2024): Desember : Katalis Pendidikan : Jurnal Ilmu Pendidikan dan Matematika
Publisher : Lembaga Pengembangan Kinerja Dosen

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62383/katalis.v1i4.855

Abstract

Ordinary differential equations (PDB) play an important role in various fields of science, from physics to biology, to model dynamic phenomena. Numerical methods such as Runge-Kutta are often used to solve GDP when an exact solution cannot be obtained. This research focuses on modifying the fifth order Runge-Kutta method to increase accuracy and efficiency in solving certain GDPs. The performance evaluation includes error and computation time analysis to assess the improvements provided by this modification. Experimental results show that the modified method is able to reduce errors significantly without a significant increase in computing time. This study contributes to the development of more accurate numerical methods for solving PDB, especially for applications with high precision requirements. The use of this modified fifth-order Runge-Kutta method can be a better choice for various complex PDB problems that require a higher level of accuracy without significant compromise in performance.
Analisis Perbandingan Pengeluaran dan Penghasilan Pedagang Pasar Sukaramai & MMTC dengan Para Penjual Kaki Lima yang Berada Dikawasan Universitas Negeri Medan Putri Maulidina Fadilah; Sudianto Manullang; Angelica Carolina Tambunan; Hanafi Irsyad Pulungan; Lirana Sapriani Gulo; Naomi Febrina Sitompul
JURNAL RISET RUMPUN MATEMATIKA DAN ILMU PENGETAHUAN ALAM Vol. 4 No. 1 (2025): April : Jurnal Riset Rumpun Matematika dan Ilmu Pengetahuan Alam
Publisher : Pusat riset dan Inovasi Nasional

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55606/jurrimipa.v4i1.5422

Abstract

This study aims to examine and compare the expenditure and income patterns between traditional market traders in Sukaramai Market and MMTC with street vendors operating around the State University of Medan (UNIMED). This study is based on the main differences between the two groups, especially related to business legality, sales location, and operational costs, which have the potential to affect business effectiveness and the economic welfare of the actors. The comparative quantitative method was used to collect data through questionnaires and Simple Random Sampling sampling techniques on 45 respondents, consisting of 30 market traders and 15 street vendors. The collected data were then analyzed using statistical inference techniques to obtain accurate and reliable parameter estimates. The results of the study show that market traders have an average income of IDR 9.37 million with expenses of IDR 6.7 million per month, so that the net profit obtained reaches IDR 2.67 million. Meanwhile, street vendors have an average income of IDR 7.2 million and expenses of IDR 5.53 million, so that their net profit is around IDR 1.67 million. Although market traders' expenses are higher, they still get a greater net profit. This study confirms that business location, legality, and management system factors significantly affect the efficiency and economic success of traders. This finding is very relevant as a basis for formulating fair and sustainable policies for empowering the informal sector, especially for small and micro traders in urban areas, in order to optimally improve their economic welfare.
Hubungan Antara Self-Regulated Learning Dan Motivasi Belajar Mahasiswa Statistika Universitas Negeri Medan Clara Jocelyn Harefa; Carles Syahputra Hulu; Ira Selvia Ritonga; Nursani Salsabillah Akza; Putri Maulidina Fadilah; Sudianto Manullang
PESHUM : Jurnal Pendidikan, Sosial dan Humaniora Vol. 4 No. 6: Oktober 2025
Publisher : CV. Ulil Albab Corp

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56799/peshum.v4i6.10312

Abstract

Penelitian ini bertujuan untuk menganalisis hubungan antara self-regulated learning dan motivasi belajar mahasiswa statistika Universitas Negeri Medan. Latar belakang penelitian ini dilandasi oleh pentingnya kedua aspek tersebut dalam menunjang keberhasilan akademik mahasiswa,khususnya pada bidang statistika yang membutuhkan ketekunan dan kemandirian belajar.Metode penelitian yang digunakan adalah kuantitatif dengan pendekatan korelasional. Data dikumpulkan dari sejumlah mahasiswa statistika Universitas Negeri Medan melalui kuesioner yang menggunakan skala Likert untuk mengukur tingkat self-regulated learning dan motivasi belajar. Analisis data dilakukan dengan menggunakan uji korelasi Pearson. Hasil penelitian menunjukkan adanya hubungan positif yang signifikan antara self-regulated learning dan motivasi belajar mahasiswa statistika. Mahasiswa dengan tingkat self-regulated learning yang tinggi cenderung memiliki motivasi belajar yang lebih baik.Temuan ini mengindikasikan bahwa pengembangan strategi pembelajaran yang mendukung kemandirian dan pengaturan diri dapat secara efektif meningkatkan motivasi belajar mahasiswa statistika.
Pengaruh Gaya Hidup Komsutif Mahasiswa Unimed Program Studi Statistika 2024 Dalam Penggunaan Skincare Tia Ramadani; Aulia Putri Br. Manurung; Risa Rozzaqi Rambe; Cahaya Destia Regar; Putri Maulidina Fadilah; Sudianto Manullang
J-CEKI : Jurnal Cendekia Ilmiah Vol. 4 No. 6: Oktober 2025
Publisher : CV. ULIL ALBAB CORP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56799/jceki.v4i6.10313

Abstract

Penelitian ini bertujuan untuk mengetahui pengaruh gaya hidup konsumtif terhadap penggunaan skincare pada mahasiswa Program Studi Statistika angkatan 2024 Universitas Negeri Medan. Penggunaan skincare telah menjadi bagian penting dari gaya hidup modern, khususnya di kalangan mahasiswa yang mulai sadar akan pentingnya penampilan. Penelitian ini bertujuan untuk mengetahui pengaruh gaya hidup konsumtif terhadap penggunaan skincare pada mahasiswa Program Studi Statistika angkatan 2024 Universitas Negeri Medan. Penelitian ini menggunakan pendekatan kuantitatif dengan teknik simple random sampling terhadap 68 responden. Instrumen yang digunakan berupa kuesioner skala Likert, dan data dianalisis menggunakan SPSS dengan uji validitas, reliabilitas, linearitas, korelasi Pearson, dan regresi linear sederhana.Hasil penelitian menunjukkan bahwa seluruh item kuesioner valid dan reliabel, dengan nilai Cronbach’s Alpha sebesar 0,916. Uji linearitas menunjukkan hubungan linear yang signifikan antara gaya hidup konsumtif dan penggunaan skincare (F = 99,263; Sig. < 0,001). Uji korelasi Pearson menghasilkan nilai r = 0,775 yang menunjukkan hubungan kuat dan signifikan. Analisis regresi menunjukkan bahwa gaya hidup konsumtif berpengaruh signifikan terhadap penggunaan skincare dengan nilai R² sebesar 0,601, yang berarti 60,1% variasi penggunaan skincare dijelaskan oleh gaya hidup konsumtif.Hasil ini menunjukkan bahwa semakin tinggi gaya hidup konsumtif mahasiswa, maka semakin tinggi pula kecenderungan penggunaan skincare sebagai bagian dari gaya hidup mereka.
Rancangan Acak Kelompok (RAK) pada Analisis Pengaruh Jenis Kontur dan Kedalaman Tanah terhadap Karakteristik Tanah Kasih Simbolon; Christine Simatupang; Diah Ayu Lestari; Rotua Evelyn Tesalonika Sinambela; Sudianto Manullang; Putri Maulidina Fadilah
Konstanta : Jurnal Matematika dan Ilmu Pengetahuan Alam Vol. 2 No. 4 (2024): Desember : Jurnal Matematika dan Ilmu Pengetahuan Alam
Publisher : International Forum of Researchers and Lecturers

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59581/konstanta.v2i4.4389

Abstract

This study aims to analyze the influence of soil contour types and depths on soil characteristics using a Randomized Block Design (RBD) method. The research data were obtained from a secondary dataset encompassing physical and chemical soil characteristics across three contour types (Top, Slope, and Depression) and four depth levels (0-10 cm, 10-30 cm, 30-60 cm, and 60-90 cm). The analysis results indicate that soil contour types and depths do not significantly affect most soil characteristics, such as pH, nitrogen content, phosphorus, calcium, sodium, and soil conductivity. However, significant effects were observed on magnesium (Mg) and potassium (K) content. Conversely, area grouping showed significant effects on nearly all tested soil characteristics. These findings highlight the importance of considering geographical variations in soil management to enhance the efficiency and sustainability of agricultural practices. Further research is recommended to explore other factors affecting soil characteristics, such as climate and vegetation types, to support more optimal land management strategies.
Pengaruh Suhu Terhadap Kadar Air pada Inti Sawit di Kernel Silo Pada Stasiun Kernel dengan Metode Rancangan Acak Kelompok Rifka Annaria Sibuea; Dilla Nurfadiah; M.E. Ernawati Siregar; Irvina Abelia Harahap; Sudianto Manullang; Putri Maulidina Fadilah
Konstanta : Jurnal Matematika dan Ilmu Pengetahuan Alam Vol. 2 No. 4 (2024): Desember : Jurnal Matematika dan Ilmu Pengetahuan Alam
Publisher : International Forum of Researchers and Lecturers

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59581/konstanta.v2i4.4390

Abstract

In the kernel processing process, it is important to understand the effect of temperature on the water content of the palm kernel in the kernel silo, especially at the kernel station. This study aims to analyze the effect of temperature on the water content of the palm kernel in the kernel silo at the kernel station. This study used the Randomized Block Design (RBD) method. Data were analyzed using linear regression and analysis of variance (ANOVA). By using the Randomized Block Design (RBD) method, the results of the treatment hypothesis were obtained that (285.241) > (2.44) which means that was rejected and could not be rejected, it can be concluded that the experiment of each temperature given had a significant effect on the resulting water content. In the results of the repetition hypothesis that (1.655) < (2.901) which means that could not be rejected and was rejected, it can be concluded that the experiment of each temperature given did not have a significant effect on the resulting water content.
Tingkat Stress Akademik Mahasiswa Prodi Statistika Angkatan 24 dan Coping Mechanismnya yang Efektif di Universitas Negeri Medan Febi Hijriana; Femi Ezrani Siantur; Nur Maulidya Rizky; Raihan Riyadi Siregar; Putri Maulidina Fadilah; Sudianto Manullang
JURNAL RISET RUMPUN ILMU PENDIDIKAN Vol. 4 No. 2 (2025): Agustus : JURRIPEN : Jurnal Riset Rumpun Ilmu Pendidikan
Publisher : Lembaga Pengembangan Kinerja Dosen

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55606/jurripen.v4i2.5640

Abstract

This study aims to identify the academic stress levels and coping mechanisms used by 2024 cohort students of the Statistics Study Program at Universitas Negeri Medan. A descriptive quantitative method was applied, involving questionnaires and interviews. Data were collected from 50 randomly selected respondents. The instrument was tested for validity and reliability, with all items showing item-total correlations > 0.2787 and a Cronbach’s Alpha score of 0.619, indicating acceptable reliability. The findings revealed high levels of academic stress, particularly in indicators such as feeling overwhelmed by deadlines (mean 3.82; 66%), exam anxiety (3.7; 66%), and lack of rest (3.6; 60%). The most dominant coping strategy was self-soothing (mean 4.44; 90%), followed by junk food consumption (3.5; 60%) and seeking help (3.42; 46%). In contrast, proactive strategies such as creating a to-do list were less commonly used (3.14; 38%). These results highlight the importance of adaptive coping training and psychological support to promote healthier stress management among students.
Pengujian Pertumbuhan Bibit Anggur Melalui Pemberian Pupuk Menggunakan Rancangan Acak Lengkap Dimas Arza Nugraha; M. Fajar Alif; Nova Oktavia Sitinjak; Rini Sartika; Sudianto Manullang; Putri Maulidina Fadilah
Interdisciplinary Explorations in Research Journal Vol. 2 No. 3 (2024)
Publisher : PT. Sharia Journal and Education Center

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

This study aims to provide the effect of various types of fertilizer on the growth of grape seedlings using a Completely Randomized Design (CRD). The study was conducted with five fertilizer treatments, namely NPK, White KNO₃, Magnesium, Humic Acid, and Compost, and four applications for each treatment, resulting in a total of 20 experimental units. The planting medium used was soil with a neutral pH, according to the optimal conditions for grape growth. The parameters observed were the length of the grape seedlings measured using a measuring instrument. The results of the analysis of variance (ANOVA) showed that fertilizer administration had a significant effect on the length of the grape seedlings. Duncan's further test divided the treatments into three groups, with NPK fertilizer giving the best results, achieving an average seedling length of 164.25 cm, followed by White KNO₃, Humic Acid, and Magnesium with similar results but not significantly different. Compost fertilizer produced the lowest seedling length of 93.75 cm. Based on these findings, NPK fertilizer is recommended to increase the growth of grape seedlings optimally.
Pengaruh Harga Produk dan Layanan Terhadap Inflasi di Kabupaten Deli Serdang Menggunakan Metode Rancangan Acak Kelompok Lengkap (RAKL) Achmad Fajri Romadhoni; Ayu Widya Sari; Ega Ananda br Sembiring; Ishak Munawar; Sudianto Manullang; Putri Maulidina Fadilah
Interdisciplinary Explorations in Research Journal Vol. 2 No. 3 (2024)
Publisher : PT. Sharia Journal and Education Center

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

This research explores the influence of product and service prices on the inflation rate in Deli Serdang Regency, using the Complete Randomized Block Design (RAKL) method. The data used includes the inflation rate of eight categories of goods and services reported by the Central Statistics Agency during the period January to June 2024. The results of variance analysis show that neither the goods/services category factor nor product prices have a significant influence on the inflation rate in the research period. This study provides initial insight into the relationship between prices and inflation and opens up opportunities for further research with broader data coverage and additional variables.